Abstract: A cryogenic liquid storage apparatus includes an inner container configured to store a cryogenic liquid, an inner holder disposed at the inner container, an outer container that surrounds the inner container, an outer holder disposed at the outer container, and a support wire that is a single body defining a closed-loop shape passing through the outer holder and the inner holder. The support wire is configured to support the inner container with respect to the outer container.

Abstract: A cryogenic container for a vehicle for storing a fluid includes an inner container having an inner space for storing the fluid, an outer container disposed to surround the inner container and having a heat insulation space configured to suppress heat transfer to the inner container, the heat insulation space being formed between the inner container and the outer container, and a reinforcement part configured to support the outer container in the heat insulation space to reinforce the outer container.

Abstract: A fluid storage container includes an inner vessel part having a first interior space (S1) for storing a fluid, an outer vessel part having a second interior space (S2) that accommodates the inner vessel part and spaced apart from the inner vessel part outwards, and a suspension part provided between the inner vessel part and the outer vessel part, one side of which contacts the inner vessel part, and an opposite side of which contacts the outer vessel part. The suspension part includes an inner member, one end of which is coupled to the inner vessel part and which extends from the one end thereof outwards, and an outer member, one end of which is coupled to the outer vessel part, which extends from the one side thereof inwards, and coupled to the inner member. The outer member is formed of a material having a thermal conductivity that is lower than that of the inner member.

Abstract: A fuel supply valve for supplying fuel from a fuel tank to a fuel cell stack includes: a plunger having a hollow therein, a core part disposed on the plunger, and a block part disposed within the hollow to maintain airtightness between the core part and the plunger, and a space in which the airtightness of the hollow has been maintained by the plunger, the core part, and the block part is defined as a pressure chamber.

Abstract: A hydrogen storage system may include a storage container storing liquid hydrogen, a supply line connected to the storage container and to a fuel cell system, the supply line supplying gaseous hydrogen to the fuel cell system from the storage container, a compressor mounted in the supply line and compressing the gaseous hydrogen, a bypass line connecting the supply line and the storage container and allowing the gaseous hydrogen to flow from the supply line to the storage container, a control valve mounted in the bypass line and selectively adjusting a bypass flow rate of the gaseous hydrogen, an orifice provided in the bypass line, and a controller configured to control the control valve, accurately adjusting a supply pressure of the storage container and a supply amount of the hydrogen to be supplied to the fuel cell system based on the operation conditions of the fuel cell system.

Abstract: A pressure regulator for a fuel cell system may include: a housing having an inlet port into which gas is introduced, an outlet port through which gas is discharged, and an regulated pressure chamber connected to an outside through the outlet port; a piston moving up and down in the housing, having a main flow path penetrating through an inside of the housing and a pressure acting portion applying a pressure of gas in the regulated pressure chamber of the housing, and selectively communicating between the inlet port and the regulated pressure chamber of the housing through the main flow path as the piston moves up and down; and a spring provided in the housing to elastically support the pressure acting portion of the piston on an opposite side of the regulated pressure chamber.

Abstract: A fuel supply valve configured to supply fuel from a fuel tank to a stack is provided. The fuel supply valve includes a plunger that has a hollow portion and a housing having with a cavity in which the plunger is configured to move. Additionally, a contact member is disposed between the housing and the plunger to be in contact both with one side of the housing and with one side of the plunger, the contact member maintaining airtightness between the housing and the plunger.

Abstract: A method is provided for controlling a hydrogen cut-off valve, which may be provided on a hydrogen supply line of a fuel cell system, in driving a fuel cell vehicle mounted with a hydrogen supply line including a high-pressure tank storing hydrogen, a hydrogen supply valve, and a hydrogen cut-off valve. The method includes: a step (a) of measuring a duty applying to the hydrogen supply valve and a step (b) of comparing the duty with a predetermined duty, in which when the duty is equal to or more than the predetermined duty, it is determined that the hydrogen supply line between the high-pressure tank and the hydrogen supply valve is abnormal.

Abstract: A pressure regulator for a fuel cell system may include: a housing having an inlet port into which gas is introduced, an outlet port through which gas is discharged, and an regulated pressure chamber connected to an outside through the outlet port; a piston moving up and down in the housing, having a main flow path penetrating through an inside of the housing and a pressure acting portion applying a pressure of gas in the regulated pressure chamber of the housing, and selectively communicating between the inlet port and the regulated pressure chamber of the housing through the main flow path as the piston moves up and down; and a spring provided in the housing to elastically support the pressure acting portion of the piston on an opposite side of the regulated pressure chamber.

Abstract: A fuel supply valve is provided. The fuel supply valve includes a housing of the valve, a plunger and a hollow part. A cavity where the plunger moves is formed at one side of the housing and a contact area is formed between the housing and the plunger based on the movement of the plunger. Accordingly, fuel flow in the cavity is limited by the contact.

Abstract: A fuel supply valve for supplying fuel from a fuel tank to a fuel cell stack includes: a plunger having a hollow therein, a core part disposed on the plunger, and a block part disposed within the hollow to maintain airtightness between the core part and the plunger, and a space in which the airtightness of the hollow has been maintained by the plunger, the core part, and the block part is defined as a pressure chamber.

Abstract: A pressure regulator for a fuel cell system may include: a housing having an inlet port into which gas is introduced, an outlet port through which gas is discharged, and an regulated pressure chamber connected to an outside through the outlet port; a piston moving up and down in the housing, having a main flow path penetrating through an inside of the housing and a pressure acting portion applying a pressure of gas in the regulated pressure chamber of the housing, and selectively communicating between the inlet port and the regulated pressure chamber of the housing through the main flow path as the piston moves up and down; and a spring provided in the housing to elastically support the pressure acting portion of the piston on an opposite side of the regulated pressure chamber.

Abstract: A method of controlling purge of a fuel cell system for a vehicle is provided. The method determines whether a purge function is normally performed in controlling purge of discharging nitrogen, hydrogen, and vapor within an anode of a fuel cell system. Particularly, the method confirms whether purge is performed by measuring a duty or a current applied to a hydrogen supply valve and measuring a change in the duty before and after an application of a purge valve operation command while adjusting a pressure inside the anode, which supplies hydrogen, to be uniform. Further, a hydrogen supply amount supplied into an anode is estimated and a change rate of a hydrogen supply amount supplied to the anode and a hydrogen amount consumed during a generation of the fuel cell system are estimated during a purge function, to determine whether purge is actually performed based on the estimated information.

Abstract: A solenoid valve is provided to control a gas supply pressure such as a hydrogen supply valve of a fuel cell system. In particular, the solenoid valve includes: a valve body including a nozzle and a valve chamber, a nozzle opening/closing sheet, and a gas bypass hole formed on the valve body to communicate with a valve chamber of the valve body when the nozzle is closed and supply gas to a first chamber of the valve chamber through the gas bypass hole. With this arrangement, the solenoid valve may inhibit gas leak that can occur in the nozzle due to a diameter error of the nozzle due to a production deviation and a production deviation of a regulator.

Abstract: A hydrogen consumption measuring method for a fuel cell system includes steps of: calculating an amount of hydrogen consumed for a representative section from a first pressure at a time when hydrogen is supplied into an anode and a second pressure at a time when the hydrogen is no longer supplied to the anode; and calculating a total amount of hydrogen consumed by accumulating amounts of hydrogen consumed from a plurality of sections.

Abstract: A fuel cell system including a hydrogen shut-off valve and a hydrogen supply valve connected therewith, the fuel cell system including: a holder capable of accommodating the hydrogen supply valve, wherein the holder includes a rupture part which may be formed at one point between the hydrogen supply valve and the hydrogen shut-off valve, and the hydrogen shut-off valve may be accommodated in one or more extended ends of the holder, and when the rupture part is cut off by external shock the hydrogen shut-off valve and the hydrogen supply valve are disconnected from each other.

Abstract: A pressure regulator for a fuel cell system may include: a housing having an inlet port into which gas is introduced, an outlet port through which gas is discharged, and an regulated pressure chamber connected to an outside through the outlet port; a piston moving up and down in the housing, having a main flow path penetrating through an inside of the housing and a pressure acting portion applying a pressure of gas in the regulated pressure chamber of the housing, and selectively communicating between the inlet port and the regulated pressure chamber of the housing through the main flow path as the piston moves up and down; and a spring provided in the housing to elastically support the pressure acting portion of the piston on an opposite side of the regulated pressure chamber.

Abstract: A solenoid valve is provided to control a gas supply pressure such as a hydrogen supply valve of a fuel cell system. In particular, the solenoid valve includes: a valve body including a nozzle and a valve chamber, a nozzle opening/closing sheet, and a gas bypass hole formed on the valve body to communicate with a valve chamber of the valve body when the nozzle is closed and supply gas to a first chamber of the valve chamber through the gas bypass hole. With this arrangement, the solenoid valve may inhibit gas leak that can occur in the nozzle due to a diameter error of the nozzle due to a production deviation and a production deviation of a regulator.

Abstract: An anode discharge valve for a fuel cell system includes a valve main body which is installed in a hydrogen recirculation line of a fuel cell stack; a drive shaft which is rotatably installed in the valve main body, and coupled to an opening member which selectively opens a hydrogen discharge port by being rotated; and a mechanism which is connected to a hydrogen inlet port of the valve main body so as to form a hydrogen inflow path, and operates to rotate the drive shaft as a pressure of hydrogen inflowing through the hydrogen inflow path increases.

Abstract: A recycling system in which anode off gas of a fuel cell is recycled to a stack includes a purge flow path purging the anode off gas passing through the stack, and a sprayer spraying pure gas supplied from a fuel tank to the stack. The sprayer is disposed on a path where the anode off gas passing through the stack is discharged, the purge flow path is spaced a certain distance from the sprayer, and the anode off gas passing through the stack is mixed with the pure gas by suction force of the sprayer to be introduced to the stack, thereby being recycled.